Change to a more reliable emacs communication method

emacs-bookmark.zsh

@@ -1,14 +1,11 @@
 # Emacs-based bookmark system
 
-# Enable color utilities
 autoload colors && colors
-autoload regexp-replace
 zmodload -F zsh/stat b:zstat
 zmodload zsh/datetime
 zmodload zsh/mapfile
 
 local __bm_bookmark_cache=()
-local __bm_res=()
 let __bm_last_read_time=-1
 
 function __bm_offset_to_row_col {
@@ -67,50 +64,47 @@ function __bm_hash_dirs {
 }
 
 function __bm_update_bookmark_list {
-    local quoted_output
     __bm_last_read_time="${EPOCHSECONDS}"
+    local args
+    local script
     case "${BM_MODE}" in
         'daemon')
-            quoted_output=(${(z)${"$(command emacs -Q --batch --eval \
-"(prin1
- (progn
+            script=$(<<'EOF'
+(progn
   (require 'server)
-   (server-eval-at \"server\"
-                   '(let ((out))
-                      (dolist (entry bookmark-alist out)
+  (dolist (entry (server-eval-at
+                  "server"
+                  '(when (boundp 'bookmark-alist)
+                     bookmark-alist)))
     (let ((path (alist-get 'filename (cdr entry) ""))
           (pos (alist-get 'position (cdr entry) 1)))
-                          (setq out (append (list (car entry) path
-                                                  (expand-file-name path) pos)
-                                            out))))))))")":1:-1}})
+      (princ (format "%s\0%s\0%s\0%s\0" (car entry) path
+                     (expand-file-name path) pos)))))
+EOF
+                  )
             ;;
         ''|'emacs')
-            quoted_output=(${(z)${"$(command emacs -Q --batch --eval \
-"(prin1
-  (with-temp-buffer
-    (insert-file-contents \"${BM_BOOKMARK_PATH:gs#\\#\\\\#:gs#\"#\\\"#}\")
-    (require 'cl-lib)
-    (let ((out))
-      (dolist (entry (read (current-buffer)) out)
+            args="--insert=${BM_BOOKMARK_PATH}"
+            script=$(<<'EOF'
+(progn
+  (dolist (entry (read (current-buffer)))
     (let ((path (alist-get 'filename (cdr entry) ""))
           (pos (alist-get 'position (cdr entry) 1)))
-          (setq out (append (list (car entry) path
-                                  (expand-file-name path) pos)
-                            out)))))))))")":1:-1}})
+      (princ (format "%s\0%s\0%s\0%s\0" (car entry) path
+                     (expand-file-name path) pos)))))
+EOF
+                  )
             ;;
         *)
         printf 'Unknown value for $BM_MODE: "%s"\n' "${BM_MODE}"
         return 1
         ;;
     esac
-    __bm_bookmark_cache=()
-    for entry in ${quoted_output}; do
-        __bm_bookmark_cache+="${(Q)entry}"
-    done
+    __bm_bookmark_cache=(${(0)"$(command emacs --batch ${args} --eval "${script}")"})
     __bm_hash_dirs
 }
 function __bm_bookmark_location {
-    local parts=(${(s:/:)"${1}"})
+    local parts=(${(s:/:)"${2}"})
     local bm_name="${parts[1]}"
     local rest_arr=(${parts:1})
     local rest="${(j:/:)rest_arr}"
@@ -150,7 +144,8 @@ function bm {
     __bm_update_bookmark_list || \
         { printf 'Updating bookmark list failed!\n'; return 1 }
     (( ${#} == 0 )) && { __bm_list_bookmarks; return }
-    __bm_bookmark_location "${1}"
+    local __bm_res
+    __bm_bookmark_location __bm_res "${1}"
     local bm_loc="${__bm_res[1]}"
     local target="${__bm_res[1]}/${__bm_res[3]}"
     if (( ${#__bm_res} != 0 )) && [[ -e "${bm_loc}" ]]; then
@@ -176,10 +171,11 @@ function _bm {
     local arg="${(Q)words[${CURRENT}]}"
     if ! [[ "${arg}" == */* ]]; then
         for ((i = 1; i < ${#__bm_bookmark_cache}; i+=4)); do
-            compadd -q -S '/' "${__bm_bookmark_cache[${i}]}"
+            compadd -q -S '/' -- "${__bm_bookmark_cache[${i}]}"
         done
     else
-        __bm_bookmark_location "${arg}"
+        local __bm_res
+        __bm_bookmark_location __bm_res "${arg}"
         if [[ -d "${__bm_res[1]}" ]]; then
             local parts=(${(s:/:)__bm_res[3]})
             local bm="${${(s:/:)${arg}}[1]}"
@@ -228,7 +224,8 @@ function bmadd {
         ;;
     esac
     __bm_update_bookmark_list
-    if __bm_bookmark_location "${name}" >/dev/null; then
+    local __bm_res
+    if __bm_bookmark_location __bm_res "${name}" >/dev/null; then
         printf 'Bookmark "%s" already exists. Overwrite it? [y/N] ' "${(q)name}"
         read -q
         let ans=${?}
@@ -265,7 +262,8 @@ function bmrm {
         return 1
     fi
     __bm_update_bookmark_list
-    __bm_bookmark_location "${1}" >/dev/null || \
+    local __bm_res
+    __bm_bookmark_location __bm_res "${1}" >/dev/null || \
         { printf 'No such bookmark: "%s"\n' "${1}"; return 1 }
     printf 'Really delete "%s"? [y/N] ' "${(q)1}"
     if read -q; then